#!/bin/bash

# Slackware build script for avr-gcc

# Written by Marek Buras <cyfr0n (at) go2 !dot pl>
# Now maintained by thorsten <thorsten (dot) johannvorderbrueggen (at) t-online (dot) de>

# This file is placed in the public domain.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=avr-gcc
VERSION=${VERSION:-10.2.0}
ISLVERSION=${ISLVERSION:-0.22}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -pipe"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -pipe"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP/$PRGNAM $PKG $OUTPUT
cd $TMP/$PRGNAM
rm -rf $TMP/$PRGNAM/*
tar xvf $CWD/gcc-$VERSION.tar.xz
tar xvf $CWD/isl-$ISLVERSION.tar.bz2
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
cd gcc-$VERSION
ln -s ../isl-$ISLVERSION isl

mkdir ../avr-gcc-build-$VERSION
cd ../avr-gcc-build-$VERSION

export CFLAGS_FOR_TARGET="$SLKCFLAGS"
export CXXFLAGS_FOR_TARGET="$SLKCFLAGS"

../gcc-$VERSION/configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --infodir=/usr/info \
  --mandir=/usr/man \
  --disable-install-libiberty \
  --disable-libssp \
  --disable-libstdcxx-pch \
  --disable-libunwind-exceptions \
  --disable-linker-build-id \
  --disable-nls \
  --disable-werror \
  --disable-__cxa_atexit \
  --enable-checking=release \
  --enable-clocale=gnu \
  --enable-cloog-backend=isl \
  --enable-gnu-unique-object \
  --enable-gnu-indirect-function \
  --enable-gold \
  --enable-languages=c,c++ \
  --enable-ld=default \
  --enable-lto \
  --enable-plugin \
  --enable-shared \
  --target=avr \
  --with-as=/usr/bin/avr-as \
  --with-gnu-as \
  --with-gnu-ld \
  --with-ld=/usr/bin/avr-ld \
  --with-plugin-ld=ld.gold \
  --with-system-zlib \
  --with-dwarf2 \
  --with-isl \
  --program-prefix="avr-" \
  --program-suffix="" \
  --build=$ARCH-slackware-linux

make || exit 1
make -j1 install DESTDIR=$PKG || exit 1

# Remove useless stuff
rm -rf $PKG/usr/lib${LIBDIRSUFFIX}/libiberty.a
rm -rf $PKG/usr/lib${LIBDIRSUFFIX}/libcc1.*
rm -rf $PKG/usr/info
rm -rf $PKG/usr/include
rm -rf $PKG/usr/share
rm -rf $PKG/usr/man/man7
rm -rf $PKG/usr/libexec/gcc/avr/$VERSION/install-tools

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
for file in COPYING* ChangeLog MAINTAINERS NEWS README*; do
  cp ../gcc-$VERSION/$file $PKG/usr/doc/$PRGNAM-$VERSION
done
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
